#include<bits/stdc++.h> using namespace std; int a[1010]; int main() { int cnt = 0; int n; cin >> n; int x; for(int i = 1;i <= n;i++) { cin >> x; if(a[x]==0) { cnt++; a[x]++; } } for(int i = 1;i <= cnt;i++) { int p = 0; for(int j = 1;j <= 1000;j++) { if(a[j] > a[p]) p = j; } if(i != cnt) cout << p << "->"; else cout << p; a[p] = 0; } return 0; }